Jonathan Spergel is the managing partner of Manko, Gold, Katcher & Fox LLP in Bala Cynwyd, Pennsylvania, the environmental and energy law firm with which he started his legal career in 1993. He handles a wide variety of environmental legal issues, including the environmental aspects of commercial transactions and brownfields sites, environmental insurance procurement and coverage issues, public funding opportunities, regulatory compliance counseling, and litigation for commercial, industrial, residential, and individual clients. From September 2001 to February 2003, Jonathan served as general counsel of O'Neill Properties, a regional real estate development company that focused on the redevelopment of brownfield sites.

Jonathan has authored a number of articles on environmental issues and frequently lectures for various groups and organizations. He graduated with distinction from Stanford University and received his juris doctorate from the University of Pennsylvania Law School, cum laude.

Jonathan is very involved in the community serving on the boards of the City Avenue Special Services District and Legacy Youth Tennis and Education. He is also the chairman of the board of the Montgomery County Redevelopment Authority. He served on the board of the Lower Merion Conservancy for nearly a decade, and previously served on the Bryn Mawr Hospital Foundation Board.

Moderator of "Preparing for and Responding to an Emergency of Casualty Incident," sponsored by MGKF in Bala Cynwyd, PA, June 24, 2014.

Moderator of "Building the Foundation for Sustainable Practices and EPA's Consideration of the New Rule for Retail Hazardous Waste," presented at the City Avenue Special Services District Lunch and Learn in Bala Cynwyd, PA, April 24, 2014

"The Real Estate Hibernation Has Ended--What Developers Need to Know About Key Environmental Regulatory Changes in the Post-Recession Economy," for the 2013 PA Brownfields Conference in King of Prussia, PA, December 11, 2013

"Due Diligence in Negotiations," presented at the 2012 Environmental Law Forum for the Pennsylvania Bar Institute in Harrisburg, PA, March 28, 2012

“Environmental Issues Associated with Real Estate Development in the Marcellus Shale Region,” presented by MGKF in Williamsport, PA, November 2011

"Taking the Mystery Out of Opting-In to NJDEP's LSRP Program," sponsored by MGKF and Environ in Edison, NJ, February 25, 2011

"Taking the Mystery Out of Opting-In to NJDEP's LSRP Program," sponsored by MGKF and Environ in Cherry Hill, NJ, February 15, 2011

"Overcoming Hurdles to Redevelopment - A Case Study of Technical, Economic, and Interpersonal Challenges," presented at the15th Annual Business of Brownfields Conference in Pittsburgh, PA, April 20, 2010

"Untangling the Web of LSRP Regulations," sponsored by MGKF in Cherry Hill, NJ, December 15, 2009